CNC machining ISO 9001 1.Material: brass 2.Finish: Zinc plating, Nickel plating and chromate plating 3.ISO9001:2008 CNC Machining ISO 90011. Product ... and plug gauge and other regular gauges.(5)Certificate: SGS ISO 9001:2000(6)Brief introduction of our experience cooperated with some of ... village, Huanxiu street, Jimo, Qingdao, Shandong province, China CNC machining ISO 9001